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Finding the Fourth Proportional to 487,621.32, 730,952.16 and 284,960.20

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Solution

The fourth proportional to 487,621.32, 730,952.16 and 284,960.20 is: 427,159.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,621.32 : 730,952.16 = 284,960.20 : x
  2. Step 2: Convert to fraction form
    487,621.32/730,952.16 = 284,960.20/x
  3. Step 3: Cross multiply
    487,621.32x = 730,952.16 × 284,960.20
  4. Step 4: Simplify right side
    487,621.32x = 208,292,273,704.03
  5. Step 5: Solve for x
    x = 208,292,273,704.03/487,621.32
  6. Step 6: Final answer
    x = 427,159.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.